Kurnakovite and Achroite Physical Properties

Kurnakovite

Achroite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.847-1.8522.90-3.40

1 7.18

1.5 Fracture

Brittle, Conchoidal

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

Poor to indistinct on {010}

Not Available

1.7 Mohs Hardness

2-37-7.5

2 10

1.8 Chemical Composition

Not Available

Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

Kurnakovite and Achroite Chemical Formula

While comparing Kurnakovite and Achroite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Kurnakovite and Achroite chemical formula.

Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.

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Kurnakovite and Achroite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kurnakovite and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kurnakovite and Achroite Optical Properties during the identification of gemstone. Specific gravity of Kurnakovite is 2.90-3.40 whereas that of Achroite is 2.90-3.40.